EP2957801A1 - Voreinstellbares Hydraulikventil, insbesondere für Hydraulikblöcke von Wärmekraftanlagen - Google Patents

Voreinstellbares Hydraulikventil, insbesondere für Hydraulikblöcke von Wärmekraftanlagen Download PDF

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Publication number
EP2957801A1
EP2957801A1 EP14173022.6A EP14173022A EP2957801A1 EP 2957801 A1 EP2957801 A1 EP 2957801A1 EP 14173022 A EP14173022 A EP 14173022A EP 2957801 A1 EP2957801 A1 EP 2957801A1
Authority
EP
European Patent Office
Prior art keywords
knob
valve
valve body
ring
shutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14173022.6A
Other languages
English (en)
French (fr)
Inventor
Guerrino Allesina
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Far Rubinetterie SpA
Original Assignee
Far Rubinetterie SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Far Rubinetterie SpA filed Critical Far Rubinetterie SpA
Priority to EP14173022.6A priority Critical patent/EP2957801A1/de
Publication of EP2957801A1 publication Critical patent/EP2957801A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
    • F16K1/04—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element

Definitions

  • This invention relates to a presettable hydraulic valve, i.e. a valve for adjusting the flowrate of fluid that can be preset, that is in particular suitable for being fitted to hydraulic manifolds of thermal plants.
  • Hydraulic manifolds for thermal plants are known that are used to distribute thermovector fluid to the various heat-exchanging units or to collect thermovector fluid coming from the various heat-exchanging units.
  • Such manifolds comprise a main conduit along which a series of presettable hydraulic valves are arranged, each of which is connected to a respective thermal unit through a respective offtake conduit.
  • Each valve provides a valve body that is inserted into a seat of the main conduit.
  • a shutter is housed that intercepts the thermovector fluid that flows between the main conduit and the respective offtake conduit of the valve so as to adjust the flowrate of fluid flowing in this direction.
  • the shutter is driven by an external cylindrical knob of the valve through a control shank.
  • One rotation of the knob corresponds to one axial movement of the control shank and thus of the shutter inside the valve body for adjusting the flowrate.
  • each valve is preset at a set value corresponding to a preset flowrate of thermal fluid relating to the thermal unit to which the valve is assigned.
  • the knob is protected by a cap that is pressure-fitted to the knob and rotates freely thereupon so as not to permit rotation thereof.
  • This system enables valves to be preset without using particular tools so as to make this possible even in small spaces.
  • a dimensional increase of the knob entails a corresponding dimensional increase of at least one part of the valve body, complicating the production lines and increasing production costs. This is all aggravated by the fact that the valve body is made of metal, in particular brass, which has a high unit cost and has to be machined by numerically controlled machine tools.
  • the object of the present invention is to propose a presettable hydraulic valve, in particular for hydraulic manifolds of thermal plants, which is able to solve the aforesaid problem.
  • the manifold illustrated in figs1, 2 is indicated generically with 10 and the two valves used therein are generically indicated by 11.
  • the manifold 10 has a longitudinal conduit 12 ending with two threaded connections 13 and 14.
  • Each valve 11 has a valve body 17 that is fixed by a screw coupling 18 inside the seat 15.
  • the body 17 is provided with a hexagonal head 19 that is used for fixing the valve body 17 to the seat 15 by a suitable tool, and remains outside the seat 15 once the valve body 17 is fixed.
  • a shutter 20 is mounted inside the valve body 17 that cooperates with a seal seat 21 mounted inside the manifold 10 for adjusting the flowrate of fluid that flows between the conduit 12 and a transverse conduit 22 that terminates at the side connection 16.
  • the shutter 20 is secured to the valve body 17 by a screw coupling 23 and is provided with a shank 24 that extends outside the valve body 17.
  • the shank 24 is provided with longitudinal toothing 25.
  • the shutter 20 is driven by a knob 26 that is mounted on the valve body 17 with an interposed intermediate ring 33.
  • the knob 26 and the intermediate ring 33 are shown in fig. 4 .
  • the knob 26 consists of a hollow cylindrical body 27 in which an axial bush 28 is formed internally of one piece having internally in succession a thread 29' and longitudinal toothing 29".
  • the knob 26 has a lower opening 30 at which inside the cylindrical wall 31 of the body 27 three longitudinal ridges 32 are obtained that are arranged asymmetrically in a circumferential direction.
  • a consecutive series of reference numbers N is provided with reference notches T at intervals, and likewise along a lower annular zone of the knob 26 an identical consecutive series of reference numbers N is provided with reference notches T at intervals.
  • the intermediate ring 33 is shown in detail in figs 5-10 .
  • the ring 33 consists of an annular lower connection 34 portion with an L section and of annular upper connection 35 portion.
  • the lower connection 34 portion has a minimum diameter that is lower and a maximum diameter that is higher than the diameter of the annular upper connection 35 portion.
  • four longitudinal cuts 36 are obtained arranged symmetrically in a circumferential direction.
  • the upper connection 35 portion has slight conicity facing downwards and in which three external longitudinal hollows 37 are obtained, arranged asymmetrically in a circumferential direction, intended for coupling with the three internal longitudinal ridges 32 of the body 27 of the knob 26.
  • the intermediate ring 33 is first mounted.
  • the ring 33 is placed on the hexagonal head 19 of the valve body 17 until the annular ridge 39 snaps elastically inside annular recess 41, indicated in fig. 3 , below the hexagonal head 19.
  • the cuts 36 permit elastic dilation of the ring 33 enabling the aforesaid elastic snap connection of the ridge 39 in the recess 41.
  • the ring 33 is thus anchored to the valve body 17.
  • the longitudinal internal ribs 38 of the ring 33 engage with the hexagonal head 19 to prevent the ring 33 rotating with respect to the valve body 17.
  • the knob 26 is mounted on the ring 33, as illustrated with reference to figs 3 , 4 .
  • the longitudinal internal ridges 32 of the knob 26 are fitted at the external longitudinal hollows 37 of the ring 33 and in this position the knob 26 is forced on the ring 33 until the ridges 32 exceed the hollows 37 and the lower edge of the knob 26 abuts against the lower annular portion 34 of the ring 33.
  • This position corresponds to the adjusting position "0" of the knob.
  • the knob 26 is free to rotate on the ring 33 in all the other adjusting positions.
  • the slight conicity of the annular upper connection 35 portion prevents the knob 26 from taking out in the aforesaid position "0", whereas in all the other positions the greater diameter of the annular upper connection 35 portion with respect to the lower diameter of the lower annular portion 34 creates a step 46 against which the ridges 32 of the knob 26 abut, preventing the knob from taking out.
  • the internal longitudinal toothing 29" of the internal bush 28 of the knob 26 couples with the longitudinal toothing 25 of the shank 24 of the shutter 20, in such a manner that the knob 26 and the shutter 20 move integrally in rotation.
  • valve 11 With reference to fig.3 , the operation of the valve 11 is as follows.
  • Rotating the knob 26 also rotates the shutter 20, because they are integral in rotation rotate together, and owing to the screw coupling between the valve body 17 and the shutter 20 there is one axial movement of the shutter 20 that enables the flowrate of fluid between the conduit 12 and the transverse conduit 22 to be adjusted.
  • the reference numbers N and reference notches T it is possible to display the approximate value of the adjustment made.
  • a washer 42 threaded externally is used that is screwed in the thread 29' of the bush 28 of the knob 26 until the washer 42 abuts against the end of the shank 24 of the shutter 20.
  • a screw 43 is used that is screwed in a threaded axial blind hole 44 of the shank 24 until the head of the screw 43 abuts against the washer 42; the screw 43 thus prevents any movement of the shank 24 and thus of the shutter 20.
  • a cap 45 is also provided that closes the hole of the thread 29' of the bush 28 of the knob 26.
  • knobs 26 Owing to the presence of the intermediate ring 33 it is possible to fit knobs 26 of various dimensions without modifying the dimensions and the configuration of the valve body 17 and of the shutter 20. In fact, it is sufficient to modify the external dimensions of the ring 33 to adapt the ring 33 to the internal dimensions of the knob 26.
  • the intermediate ring 33 can be made of plastics.
  • Fitting the valve 11 is also simple owing to the joints provided.
  • the particular joint with ridges 32 and hollows 37 arranged circumferentially in an asymmetrical manner enables the position "0" of the knob 26 to be identified unequivocally during mounting.
  • the manifold can consist of any number of valves like the one disclosed and illustrated.
  • the numbers and the notches can be arranged only on the upper part of the knob or only along an annular zone of the knob or in other zones of the valve.
  • the valve can also be used in its own right and not necessarily in the context of the manifolds, or can be used in the contexts of other hydraulic complexes.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)
EP14173022.6A 2014-06-18 2014-06-18 Voreinstellbares Hydraulikventil, insbesondere für Hydraulikblöcke von Wärmekraftanlagen Withdrawn EP2957801A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14173022.6A EP2957801A1 (de) 2014-06-18 2014-06-18 Voreinstellbares Hydraulikventil, insbesondere für Hydraulikblöcke von Wärmekraftanlagen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14173022.6A EP2957801A1 (de) 2014-06-18 2014-06-18 Voreinstellbares Hydraulikventil, insbesondere für Hydraulikblöcke von Wärmekraftanlagen

Publications (1)

Publication Number Publication Date
EP2957801A1 true EP2957801A1 (de) 2015-12-23

Family

ID=51300506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14173022.6A Withdrawn EP2957801A1 (de) 2014-06-18 2014-06-18 Voreinstellbares Hydraulikventil, insbesondere für Hydraulikblöcke von Wärmekraftanlagen

Country Status (1)

Country Link
EP (1) EP2957801A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934547A1 (de) * 1969-07-08 1971-01-14 Schmahl Berthold Mehrzweck-Drehgriffausbildung und Befestigung vorzugsweise fuer sanitaere Armaturen
DE2029881A1 (de) * 1970-06-18 1971-12-23 Horstman Handels Gmbh Steckverbindung von treibenden oder getriebenen Aufsteckkorpern auf Drehkor perteile
US3942760A (en) * 1974-06-19 1976-03-09 Barking Brassware Co., Ltd. Valves
EP1715231A1 (de) * 2005-04-20 2006-10-25 JRG Gunzenhauser AG Ventil mit einem in ein Ventilgehäuse einzusetzenden Oberteil
DE202007012540U1 (de) * 2007-03-21 2007-11-22 F.W. Oventrop Gmbh & Co. Kg Handantrieb für Ventile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934547A1 (de) * 1969-07-08 1971-01-14 Schmahl Berthold Mehrzweck-Drehgriffausbildung und Befestigung vorzugsweise fuer sanitaere Armaturen
DE2029881A1 (de) * 1970-06-18 1971-12-23 Horstman Handels Gmbh Steckverbindung von treibenden oder getriebenen Aufsteckkorpern auf Drehkor perteile
US3942760A (en) * 1974-06-19 1976-03-09 Barking Brassware Co., Ltd. Valves
EP1715231A1 (de) * 2005-04-20 2006-10-25 JRG Gunzenhauser AG Ventil mit einem in ein Ventilgehäuse einzusetzenden Oberteil
DE202007012540U1 (de) * 2007-03-21 2007-11-22 F.W. Oventrop Gmbh & Co. Kg Handantrieb für Ventile

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